SHINee’s Jonghyun & Taemin arrived at Strong Heart recording studio. Both rushed over and exchanged warm greetings with Lee Teuk. Taemin whom brought along a black plastic carrier piqued everyone’s curiosity. He took out a hair home appliance. Taemin’s action caused everyone to burst into laughter in the studio.Source: WithTaeminTranslated by: eimanjjong

Taemin rose curiosity by bringing something inside a black plastic bag. He took it out and it turned out to be hair trimmers. (Strong Heart)
hair trimmers for teuk going to the army lulzTranslated by: hanatwothree_

UPDATE #1:

During the Strong Heart recording they discussed Changkyu kissing Taemin during SMTOWN.
Changmin said, “Because the concert was in Seoul, we wanted to make it special, so we didn’t choose a fan, but let a singer from the company help out instead. We even thought of Yunho at first. In the end we asked Taemin because he was too pretty. During the rehearsal, I wanted to do something different to attract everyone’s attention, so I told Kyuhyun that during the real performance I was going to kiss Taemin. In the end, during the performance, Kyuhyun kissed him first! What was he thinking? That was my idea! So I just didn’t care too much about my singing at just kissed Taemin’s head, I not only kissed, but made a very loud kissing sound (and reenacted it on the spot). And then continued singing, in the end I went off key.Source: 芳如荑Translated by: kikiikyu

Strong Heart recording- Yunho, Taemin and Eunhyuk admitted they were secretly competitive to dance with BoA for Only One.Source: ELF_thoughts

‘During the Strong Heart recording, Taemin seemed really bored; Most of the time he remained in daze and pouting’
‘Bored Taemin continues to find Jonghyun on his left and Eunhyuk on his right, & also did some drawings on the back of the board beside him”Source: WithTaeminTranslated by: NINGZzhi